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Solar Panels heating geyser setup

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I have a 5kW Sunsynk inverter and battery installed. I'm going to add 10x 460W panels. The installer mentioned that he will connect the main geyser to the back end of the inverter to warm water with surplus solar energy. As I have two geysers next to each other – main bathroom and second bathroom - seldom used, is the following an option:

  1. Connect the two geysers to each other, heat the second one with solar energy, which in turn will feed the main geyser with hot water, and then the main geyser’s thermostat will maintain the temperature?
  2. If the second geyser is then needed, to only supply the second bathroom, its thermostat can be switched on and diverted back to the second bathroom.

Is this a viable solution, or should I not involve the second geyser?

Any other suggestions to enhance the system would be appreciated.

20 hours ago, Calli said:

I have a 5kW Sunsynk inverter and battery installed. I'm going to add 10x 460W panels. The installer mentioned that he will connect the main geyser to the back end of the inverter to warm water with surplus solar energy. As I have two geysers next to each other – main bathroom and second bathroom - seldom used, is the following an option:

  1. Connect the two geysers to each other, heat the second one with solar energy, which in turn will feed the main geyser with hot water, and then the main geyser’s thermostat will maintain the temperature?
  2. If the second geyser is then needed, to only supply the second bathroom, its thermostat can be switched on and diverted back to the second bathroom.

Is this a viable solution, or should I not involve the second geyser?

Any other suggestions to enhance the system would be appreciated.

I would keep it simple. I would connect the two geysers up as non critical loads so the inverter will push power to them if there is excess solar and battery. On top of that I would put the geysers on timers so they only charge during daylight hours when you are most likely to feed them with solar directly. I would not make the one geyser feed the other.

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